package com.itheima.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.R;
import com.itheima.reggie.entity.Employee;
import com.itheima.reggie.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import java.time.LocalDateTime;

@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {

    @Autowired
    private EmployeeService employeeService;

    /**
     * 员工登录
     * @param request
     * @param employee
     * @return
     */
    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request, @RequestBody Employee employee){

        String password = employee.getPassword();
        String username = employee.getUsername();


        //1、密码md5加密
        password = DigestUtils.md5DigestAsHex(password.getBytes());

        //2、根据用户查询数据库
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(Employee::getUsername, employee.getUsername());
        Employee emp = employeeService.getOne(queryWrapper);

        //3、如果没有查询到则返回登录失败结果
        if (emp == null){
            return R.error("账户为空，登录失败");
        }

        //4、密码是否一致
        if (!emp.getPassword().equals(password)){
            return R.error("密码错误，登录失败");
        }

        //5、查看员工状态是否禁用
        if (emp.getStatus() == 0){
            return R.error("账户已禁用");
        }

        //6、登陆成功，将员工id 放入session，返回成功结果
        request.getSession().setAttribute("employee",emp.getId());

        return R.success(emp);
    }

    /**
     * 员工退出
     * @param request
     * @return
     */
    @PostMapping("/logout")
    public R<String> logout(HttpServletRequest request){
        //清理session中保存的当前登录员工的id
        request.getSession().removeAttribute("employee");
        return R.success("退出成功");
    }

    /**
     * 新增员工
     * @param employee
     * @return
     */
    @PostMapping
    public R<String > save(HttpServletRequest request ,@RequestBody Employee employee){
        log.info("新增员工，{}", employee);

        //设置初始密码123456，需要使用md5加密
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));

        //employee.setCreateTime(LocalDateTime.now());
        //employee.setUpdateTime(LocalDateTime.now());


        //employee.setCreateUser((Long) request.getSession().getAttribute("employee"));
        //employee.setUpdateUser((Long) request.getSession().getAttribute("employee"));


        employeeService.save(employee);

        return R.success("新增员工成功！");
    }

    /**
     * 员工分页查询
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("/page")
    public R<Page> page(int page, int pageSize, String name){
        log.info("page = {},pageSize = {},name = {}", page, pageSize, name);

        //构造分页构造器
        Page pageInfo = new Page(page, pageSize);

        //构造条件构造器
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();

       //添加过滤条件
        queryWrapper.like(StringUtils.isNotEmpty(name), Employee::getName, name);

       //添加排序条件
        queryWrapper.orderByDesc(Employee::getUpdateTime);

        //执行查询
        employeeService.page(pageInfo, queryWrapper);

        return R.success(pageInfo);
    }

    /**
     * 根据id修改员工信息
     * @param employee
     * @return
     */
    @PutMapping
    public R<String> update(HttpServletRequest request, @RequestBody Employee employee){
        log.info(employee.toString());

        Long empId = (Long) request.getSession().getAttribute("employee");

        //employee.setUpdateTime(LocalDateTime.now());
        //employee.setUpdateUser(empId);

        long id = Thread.currentThread().getId();
        log.info("线程id为：{}", id);

        employeeService.updateById(employee);

        return R.success("员工信息修改成功");
    }

    @GetMapping("/{id}")
    public R<Employee> getById(@PathVariable Long id){
        log.info("根据id查询员工信息...");
        Employee employee = employeeService.getById(id);

        if (employee != null){
            return R.success(employee);
        }
        return R.error("没有查询到对应员工信息！");
    }

}

